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Subject: Re: Move ordering scheme

Author: Tord Romstad

Date: 09:35:56 03/16/04

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On March 16, 2004 at 11:44:25, Andrew Wagner wrote:

>If Crafty searches 5000 nodes to get to a certain depth in a position, my engine
>searches at least 50000 nodes. Which means of course it is slower to reach that
>depth, even if the nps were the same. Thanks!

You shouldn't compare the number of nodes you need to reach a certain depth to
the numbers you see in Crafty (or any other engine).  Such comparisions simply
do not make any sense at all.  Crafty and Trueno probably search entirely
different trees.  They have different extensions, different pruning rules,
different quiescence searches, and perhaps even different ways of counting
nodes.

It is a very good idea to try to reduce the size of your tree (I think you
will find that it is the most effective way to improve your engine rapidly),
but you should compare the results to older versions of your own engine
rather than to Crafty.

Tord




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